Consideration of Ke-Factor (Simplified Elastic-Plastic Analysis) for Calculation of Strain Rate in Environmental Fatigue Evaluation

Abstract

In the current JSME S NF1-2009, "Environmental Fatigue Evaluation Method for Nuclear Power Plants", the Ke-factor could not be applied to the strain rate calculation for environmental fatigue evaluation because the conservative result is required. Although the conservatism is slightly reduced by adopting a strain rate that takes the Ke-factor into consideration, it is possible to optimize the excessive conservatism of the environmental fatigue evaluation and proceed with the evaluation rationally.